You don't give enough information. What are your tank parameters, nitrates, temp etc? How long has your tank been set up? How long have you had this fish, any other new ones?
When in doubt, it's always a good idea to change some water.
i ran out of all the rest, but last time i checked, they were fine
the tank is cycled and its about 2 months old...
I have had this fish for about 2/3 weeks
and I just added 2 red danios